40106709 has 6 divisors (see below), whose sum is σ = 57931926. Its totient is φ = 26737800.

The previous prime is 40106699. The next prime is 40106713. The reversal of 40106709 is 90760104.

It can be written as a sum of positive squares in only one way, i.e., 32832900 + 7273809 = 5730^2 + 2697^2 .

It is not a de Polignac number, because 40106709 - 2⁷ = 40106581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40106309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2228142 + ... + 2228159.

It is an arithmetic number, because the mean of its divisors is an integer number (9655321).

Almost surely, 2^40106709 is an apocalyptic number.

It is an amenable number.

40106709 is a deficient number, since it is larger than the sum of its proper divisors (17825217).

40106709 is a wasteful number, since it uses less digits than its factorization.

40106709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456307 (or 4456304 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 40106709 is about 6332.9857887098. The cubic root of 40106709 is about 342.2990356746.

The spelling of 40106709 in words is "forty million, one hundred six thousand, seven hundred nine".